Per the comments from the helicopter photos, it does appear that things have started, clearing buildings out of anything valuable, etc. Not sexy work, not permit required work, but necessary none the less.
It doe seem slow. But a home improvement warehouse store was approved to go in down the street from me, it was ok'd over a year ago. Not a single shovel on the property yet. We hear stories all the time of new things coming to the neighborhood, and asking for government or voter approvals, and then it takes 1-2 years before the even start building. I will believe the January time frame to start construction.